Abstract
THE work on multi-layer dielectric films as described recently by A. H. Jarrett and H. v. Kluber1 is of interest in two respects: the reflectivities reported are rather higher than those found by other workers, and the successful use with etalons shows that these films must have a considerable degree of uniformity. But the comparison of the relative merits of these films and silver films for use with Fabry–Perot interferometers is very misleading. Jarrett and v. Kluber do not mention recent publications on the resolving power of silvered etalons and the reflectivity of evaporated silver layers2. If the measurements published in these papers are taken into account, it is apparent that multilayer coatings are not superior, in the range of wave-lengths over which they have been investigated, to evaporated silver films of good quality.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
